Download File
This link includes installation instructions for the top of the door, the bottom of the door and the jams as well and yes you can also cure excessive gaps on the hinge side.
There are any questions that you have prior to placing your order with us please feel free to call and we will discuss installation of this in detail however while the installation is simple and straightforward in the material is certainly readily available you will want to be sure that it is acceptable to the authority having jurisdiction in your locale and also be mindful that it's very possible that it will be less expensive to replace the door out right.
If you were to proceed I would likely put a note on top of that door or somewhere very inconspicuous at the label of the door can be seen by removing the top cap. This would help a future inspector know exactly what to look for. You might also take a photograph of that label, print that out and then apply that to the cap with a note indicating the physical label is below this cap.